Rolling-mill.



J. E. FAWELL.

ROLLING MILL.

APPLICATION FILED 1AN.30.19|5. RENEWED MAY 29.1915.

1,1 92,814. 1 Patented July 25, 1916.

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1.1. FAWELL. ROLLING MILL. APPLICATION FILED JAN. 30, I9I5. RENEWED MAY 29,1915- Patented July 25, 1916.

4 SHEETS-SHEET 3 INVEIITOR WEE-3M NO 0 0 0 0 0 MN QQ w 40 filed of even date herewith, the lower ends JOSEPH E. FAWEL'L, F PITTSBURGH, PENNSYLVANIA.

ROLLING-MILL.

Specification of LettersPatent. I

Patented July 25, 1916.

Application filed. January 30, 1915, Serial No. 5,316. Renewed Ma 29, 1910. Serial No. 100,705.

To all whom it may concern:

Be it known that I, Josnrn ED A D FAWELL, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new andluse ful Improvements in Rolling-Mills, of which improvements the following; is a' specifica tion.

are shown and described certain embodiments of a new type of rolling mill inwhich two pairs or sets of rolls are movable in a vertical plane to and from operative position, one pair of rolls being driven to move the article while reducing it, in one direction, and the other pair being driven to effect an opposite movement of the article.

The invention described herein relates to certain improvements whereby the pass dimensions of the pairs of rolls may be increased or decreased as required and also to certain improvements in the manner of operating said pairs of rolls.

In the accompanying drawings forming a part of this specification, Figure '1 is a top plane view of the improved mill; Fig. 2 is a side elevation of the same; Fig. 3 isa sectional elevation on a plane indicated by the line III-III Fig. 2, and Fig. 4 is .an end elevation of the pinion housingjFig. 5 is a sectional view illustrating a modification of the supports intermediate of the pairs of rolls; Fig. 6 is a section on a plane indicated by the line VIVI, Fig. 5,:and Fig.7" is a detail view.

As in the construction shown and described in the application Serial No. 5315 of housings 4: are formed on arcsof circles and rest upon rollers 42 mounted in the bed of the mill. While any suitable means may be employed'torock the housings on the rollers, it is preferred to employ single acting fluid pressure cylinders 53 and 54: for that purpose.v The cylinders are oppositely arranged and have their pistons or rams connected to cross-heads 49 and which in turn are connected by pitmen 4:7 and 18 to the housings, as fully described and shown in said application. The movements of the housings are limited by stops 55 and-56 .on the housings encountering abutments 57 and 58 on the bed of the mill, and in order to prevent injurious shocks or jars, the final movements of the housings are arrested by cushioning devices preferably consisting of air cylinders.

In the form of mill shown in Patent No. 1,131,604 windows of housings which are adapted 'to receive the bearings for the journals of the rolls are arranged at such an I I a'nglerelative one to the other, that when In Letters Patent granted March 9th-,1915, and numbered 1,131,604, and in an applica-' tion filed January 30th 1915, Serial No. 5815;

one pair of rolls are in working position, a horizontal plane tangential to the top of the lower roll of the'working pair will pass over and be"tang'ential to the upper roll of the other or non-working pair, and this upper roll is employed to feed the article along. It will be readily understood that the em ployment of the upper rolls to feed the article is practicable only in cases where the positions of the upper rolls are fixed or said rolls are adjustable only to compensate for wear.

In mills where provision must be made for substantially changing the pass dimensions by shifting the upper rolls from and toward the lower rolls, the windows for one pair of rolls should be at such an angle to those for the other pair, that when one pair of rolls is inworking position, the top roll of the other or non-working pair will even when shifted to journals mounted in suitable bearings on the housings. A similar support 80 is arranged in front of the other pair of rolls a b. In order to carry the article from the rolls 0-03 to the feed table .A, two supports 81 preferably in the form of rollers are so arranged in the rear of'rolls c(Z that their upper surfaces will be tangential or approximately tangential to a horizontal plane which is tangential to the top of the lower roll (Z. In line with these rollers 81 is arranged a bridge 82* which will carry the piece over the upper roll a and onto the table A. Similar supports 81 and a bridge 82 are provided for carrying the article tion, over the roll and onto the table B. As the rollers 81 and 81 are spaced a considerable distance apart, it is preferred to employ an intermediate support 83.

As the pieces to be rolled may be shorter than the distance between the working rolls and their receiving table, provision is made as clearly shown in Fig. 3 for driving the rollers for carrvin g the articles from the feed table to the rolls and from the latter to the receiving table. It will be understood that the rollers and 81 are driven in the same direction as the lower roll (Z while the rollers 80 and 81 are driven in the direction of the lower roll 6.

In lieu of employing two sets of rollers intermediate the pair of rolls, two or more feed rollers 84, reversible but non-shiftable with the rolls, can be arranged intermediate of the latter as shown in Figs. 5 and 6, these rollers having their journals mounted in the side pieces 85 connected by cross-bars 86, and provided with trunnions 87 and 88. The trunnion 87 is made circular in crosssection and extends into a bearing in one of the housings, but the other trunnion 88 extends through the other housing and has its outer end secured in an anchor 89. As the axes of the trunnions coincide with the axis of movement of the housings and as one of the trunnions is held stationary by the anchor the housing can be shifted without affecting the position of these intermediate supports.

As the feed tables A and B are vertically stationary and have their rollers tangential to a common horizontal plane, the rollers 841 are so mounted in the side pieces as to be tangential to the same plane, which passes between the rolls of each pair when in working position. Provision is made for rotating one or more of the intermediate feed rollers by extending the journal of one of the rollers through the trunnion 88 and securing a bevel pinion 91 on this extension 90. This pinion is driven by a corresponding pinion on a shaft 92, which can be connected with the mechanism employed for operating the rollers of tables A and B, so as to be driven in the same direction as said rollers and to be reversible with the latter.

As the pairs of rolls do not in any sense form a continuous train, they may be driven independently one of the other and at different rates, but it is preferred to drive them from a common motor through suitable housings as shown in Figs. 1, 2 and 4. The rolls of each pair are connected by universal couplings 16 to one end of driving spindles or coupling shafts 17 which have their opposite ends similarly connected to the journals of pinions 18, 18 and 19, 19 The pinions of each pair intermesh so that the rolls driven thereby will rotate in opposite directions and the shafts carrying respectively one pinion of each pair (the upper pinions in the construction shown) are extended and have secured thereon gear wheels 20 which intermesh so that the rolls of one pair will rotate in a reverse direction to those of the other pair. One of the gear wheels 20 is operatively connected to the motor shaft.

In the type of mill shown herein provi sion is made for varying the relative positions of the rolls of each pair by means of 5 screws passing through the caps 69 of the windows in which the roll journals are mounted. As it is preferred that the screws for each pair should be shifted simultaneously, the nuts 93 engaging the screws are provided with worm wheels 94, which are engaged by worms on the shaft 95 arranged parallel with the rolls as shown in Figs. 1 and, 2. It is preferred that the shafts 95 should be driven by independent motors 96 which may be of any suitable construction. The upper rolls may be held in operative relation to the shifting screws by any of the means known in the art, as for example in the manner shown in Fig. 5, the screws having a swivel connection with the upper bearing blocks 97 for the journals of the rolls and the lower blocks or saddles as they are usually termed being bolted to the upper blocks.

I claim herein as my invention:

1. In a rolling mill, the combination of two sets of rolls, means for shifting said sets of rolls alternately to and from working position, and means intermediate said sets of 10a rolls for moving the article being reduced from the rolls in working position.

2. In a rolling mill, the combination of two sets of rolls, means for shifting said sets of rolls alternately to and from working position, and means for carrying the article being reduced from the rolls in working position over the rolls in inoperative or non-working position.

3. In a rolling mill, the combination of two sets of rolls, means for rotating said sets of rolls in opposite directions, respectively, and reversible means intermediate the sets of rolls for carrying the article from the set of rolls in working position, and means for shifting said sets of rolls alternately to and from working position.

4. In a rolling mill, the combination of two main feed tables, spaced a suitable distance apart, a feed table intermediate the main tables, the several tables being provided with reversible feed rollers, two sets of rolls, means for rotating said sets of rolls in opposite directions, respectively, and means for shifting said sets of rolls alternately, one set between a main table and the intermediate table and the other set between the intermediate and the other main table.

5. In a rolling mill, the combination of two sets of rolls, the axes of one .set being 13a in a plane at an angle to a plane coincident pinions when said rolls are in working posi- 10 with the axes of the other set, means for tion.

shifting said sets of rolls alternately to In testimony whereof, I have hereunto set working position, two sets of pinions having my hand.

universal driving connections with the respective rolls, the members of each set of JOSEPH FAWELL' pinions having their axes in a plane approxi- Witnesses:

mately coincident with a plane passing ALICE A. TRILL,

through the axes of the rolls driven by the THOS. B. J OYCE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

